BROADCASTING OF TV
The term 'broadcasting'means to send out in all direction.The transmitting antenna radiates electromagnetic radio waves that can be picked up by the receiving antenna. The radiation is in the form of rf carrier waves, modulated by the desired information .Amplitude modulation (AM) is used for the pictoure signal.However,frecuency modoulation (FM) is used for the sound signal. Wesee that the desired sound for the televised program is converted by the microphone to an audio signal, which is amplified for the sound signal transmitter. For teransmittionof the picture, the camera tube converts the visual information into electrical signal variations. SOURCE:Miller,M.(1993).Modern Electronic Communication.Prentic-Hall.International,Inc
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